https://extensions.sketchup.com/extension/feb57d2f-7b83-40ff-aa65-6d9c8b119395/eneroth-script-runner
This extension allows you to run scripts just by dragging their .rb file into SketchUp. This is mostly aimed at developers to run scripts and snippets that not yet (or ever) have got a proper UI.
Idea from @CAUL.